stillman



(No Model.) 2 Sheets-Sheet 1- F H ILLMAN.

MACHINE FOR GOVERIN RIGAL GONDUOTORS WITH LEAD. No. 443,551. Patented Dec. 30, 1890.

I I l I H (No Model.) I 2 Sheets-Sheet 2. 15'. E; STILLMAN. MACHINE EUR COVERING ELECTRICAL CONDUCTORS WITH LEAD.

No. 443,551. Patented Dec. 30, 1890.

UNITED STATES PATENT QFFICE,

FRANCIS ll. STILLMAN, OF NE\V YORK, N. Y., ASSIGNOR TO JAMES B. ATI-IERTON, OF SAME PLACE.

MACHINE FOR COVERING ELECTRICAL CONDUCTORS WITH LEAD.

SPECIFICATION forming part of Letters Patent No. 443,551, dated December 30, 1890. Application filed June 6, 1890. Serial No. 354,467. (No model.)

To all whom it may concern.-

Be it known that I, FRANCIS H. STILLMAN, a citizen of theUnited States, residing atNew York, State of New York, have invented certain new and useful Improvements in Machines for Covering Electrical Conductors with Lead, of which the following is a specification.

The object of my invention is to provide a machine for covering insulated conductors, and cables of insulated conductors, with lead, in which the core-bars and dies maybe readily removed and replaced to adapt the machine to the covering of different-Sized conductors and cables, and in which the charge of lead may be readily removed from the leadchamber in the block upon the shutting down of the machine.

In the accompanying drawings, Figure 1 is a vertical longitudinal section on the line 1 1 of Fig. 2. Fig. 2 is a horizontal section on the line 2 2 of Fig. 1 Fig. 3,a transverse vertical section on the line 3 3 of Fig. 1; and Fig. 4:, a section similar to Fig. 1, but showing a core-bar and die of small diameter, to be used in the covering of single insulated conductors for arc-light and power circuits.

In the drawings, A represents the head of the press, and B the cylinder within which the leadchamber B is formed. Between these two part-s is placed the die-block, which is horizontally divided into two parts 0 0'. Between the two parts of the die-block is located a core-bar support D, formed in one piece with arearwardly-extending sleeve D, through which the core-bar is inserted and removed, and the end of whichis mounted in the rear walls of the die-block. The support D is seated at (Z d in suitable seats or sockets, preferably formed in the upper as well as the lower section of the die-block. The dieblock is formed with a chamber F, constituting a prolongation of the lead-chamber, and

across the chamber F the sleeve D extends.

The support D is shown cut away upon each side at cl cl, and through the openings thus formed the lead is pressed from the chamber F into the lead pipe-forming chamber G. The upper portion of the support D seated in the upper half of the block might be cut entirely away. A core-bar ll, through which the cable or conductor to be covered is led, is inserted through the rear wall of the die-block, sleeve D, and support D, and projects beyond the support'D into the lead pipe-forming chamber G. A corresponding die I is mounted on the front wall of the die-block immediately opposite and concentric with the core-bar H. The core-bar maybe adjusted by a screw-threaded follower H and the die by a similar follower I. The two halves of the die-block are maintained in proper relation to each other by dowels c on the upper half of the block entering corresponding'sockets in the lower half. Any suitable well-known 6 5 arrangement for bolting the halves of the dieblock together may of course be adopted.

The exact shape of the chamber F G within the die-block is not an essential consideration and the contour of the chamber shown in the drawing may be varied. Similarly the support D may be cut away more or less than indicated at d, all such matters being mere details of construction which may be varied.

The organization shown in Figs. 1, 2, and 3 is adapted for the covering of cables of insulated conductors. In Fig. 4 is shown an arrangement that may be adopted where the size of the core-bar and die is to be reduced. The rear end of the sleeve D is formed with an annular socket (Z and a sleeve K may be inserted within the opening in the parts D D to reduce the interior diameter, such a diameter-reducing sleeve being preferably formed at its rear with an annular flange 7o, which is then seated in the annular socket (Z in the rear end of the sleeve D. The core bar is then inserted within the sleeve K and adjustable by a follower, as before. This core-bar may, if desired, be formed of three parts, as follows: H is the nose of the corebar, H a hollow section, and H the rear section, against which the follower H bears. To provide for the use of adie 1 similarly re duced in diameter, a sleeve 1 within which the die is seated, may be placed in the opening in the front wall of the die-block and adjusted by the follower I. By dividing the block horizontally the support D and sleeve D may be readily placed in position or lifted IOO out, as may be desired. With regard to their removal, since it is desirable and, indeed, nec essary to remove all lead from the die-block when work is stopped for the day, the facility with which the parts of the block may be separated and the support and core-bar removed and the die-block freed from lead is a very material advantage. The function of the support D is to support the core-bar in proper relation to the die and in such man: ner as to prevent it being displaced by excessive strain. By employing the sleeve D, I am enabled to withdraw the core-bar and insert another at any time, because the bar is not embraced directly by the lead, except its extreme end or nose, and is always capable of being moved in the sleeve.

I claim as my invention- 1. The combination, with adie-block having a lead-chamber formed therein and openings for the core-bar and die, of a sleeve sup ported within the lead-chamber in proper relation to the die, and a hollow core-bar seated in said sleeve.

2. The combination, substantially as set forth, of a die-block having a lead-chamber formed therein, the die, a sleeve supported within the die-block, and the core-bar seated in the sleeve.

The combination, with a die-block having a lead-chamber formed therein and openings for the entrance of the core-bar and die,

of a support D, having a rearwardly-extending sleeve D, within which support and sleeve the core-bar is seated and supported, substantially as set forth.

4. The combination, substantially as set forth, of the horizontally-(iivided die-block,

I i l I the lead-cha1nber I (1 formed therein, the support D, seated between two halves of the die-block and reduced or cut away to permit the entrance of the lead to the pipe-forming chamber Gand the sleeve D, extending rearwardly from the support and seated in the rear wall of the die-block, the core-bar seated within the sleeve D and support D, and the concentrically-arranged die supported in the wall of the die-block opposite the end of the core-bar.

5. The combination, substantially as set forth, of the die-block, the support D and rearwardly-extending sleeve D thereof, seated within the die-block, the diameter-reducing sleeve K within the sleeve D and having a flange is seated in an annular socket in the end of the sleeve D and the core-bar arranged within the sleeve K.

0. In a machine for covering cables with lead, the combination, substantially as set forth, with a block having a lead-chamber F forn'iing a continuation of the lead-cylinder, and a pipe-forming chamber G at one side or end of the lead-chamber, of a sleeve supported within the lead-chamber and arranged transversely to the tlow of lead from the lead-cylinder, a core-bar seated in said sleeve and projecting into the pipe-forming chamber, and a die in the end of the pipe-forming chamber.

In testimony whereof I have hereunto subscribed my name.

FRANCIS ll. S'IIL'LMAN.

Witnesses:

EDXVARD C. Davrosox, FRANK S. OBER. 

